Merge branch 'rs/test-cleanup'

Test cleanup.

* rs/test-cleanup:
  t6030: don't create unused file
  t5580: don't create unused file
  t3501: don't create unused file
  t7004: don't create unused file
  t4256: don't create unused file

diff --cc t/t3501-revert-cherry-pick.sh
Simple merge

diff --cc t/t7004-tag.sh
Simple merge